3v4l.org

run code in 500+ PHP versions simultaneously

@ 2018-09-21T00:47:24Z

<?php
$array=[
    '2017-05-01'=>[
        'DC'=>[
            'IT'=>[90, 0],
            'DE'=>[18, 315, 40, '', 69, 211],
            'Other'=>[107, 46, '', '', 27, 22]
        ]
    ],
    '2017-05-02'=>[
        'DC'=>[
            'IT'=>[70, 40, 55],
            'DE'=>['', 31, 4, '', 9],
            'Other'=>[1107, 12, 0, 20, 1, 11, 21]
        ]
    ],
    'fringe case'=>[
        'DC'=>[
            'IT'=>[],
            'DE'=>['', '', '', 99],
            'Other'=>['', 99]
        ]
    ]
];

foreach ($array as &$lv1) {
    foreach ($lv1 as &$lv2) {
        foreach ($lv2 as &$lv3) {
            sort($lv3);                  // order values ASC
            $count = sizeof($lv3);       // count number of values
            $index = floor($count / 2);  // get middle index or upper of middle two
            if (!$count) {               // count is zero
                $lv3 = 0;
            } elseif ($count & 1) {      // count is odd
                $lv3 = (int)$lv3[$index];                        // single median
            } else {                     // count is even
                $lv3 = ((int)$lv3[$index-1] + (int)$lv3[$index]) / 2; // dual median
            }
        }
    }
}
var_export($array);

Output for 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.31, 8.4.1 - 8.4.22, 8.5.0 - 8.5.7: array ( '2017-05-01' => array ( 'DC' => array ( 'IT' => 45, 'DE' => 54.5, 'Other' => 24.5, ), ), '2017-05-02' => array ( 'DC' => array ( 'IT' => 55, 'DE' => 4, 'Other' => 12, ), ), 'fringe case' => array ( 'DC' => array ( 'IT' => 0, 'DE' => 0, 'Other' => 49.5, ), ), )

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